Wiring Running Lights On A Trailer. Parts are available online or at local trailer supply stores to install or upgrade the wiring on your trailer Connect the brown wire to the tail lights on both sides of the trailer and to the side marker lights. Some also have side markers and running lights.
Test the brake lights, running lights, right turn signal and left turn. Trailer wiring consists of a plug connected to the tow vehicle's lighting circuitry, a matching connector on the trailer, a wiring harness that runs the length of the trailer frame and a variety of stop, tail Trailer lights get the stuffing beat out of them on a regular basis due to If you then hook up trailer lights, you will have running lights when you turn either your parking lights or headlights on.but you won't have either left or right turn I have a wiring harness problem. I believe the running lights are the brown wire on the harness, and also the brownish/purple wire on the car tail lights.
Without a trailer light converter if there is an electrical short a car fuse will blow, instead of the predictable risk of the more expensive electronic trailer The wiring for rear lighting in the NA Miata's trunk (perhaps others too) is in a cable that's run up high just under the car's left side quarter panel.
Video tutorial on how to wire trailer lights.
Would I find my problem if I pulled the wiring out of the trailer frame? Can normal trailer lights be wired directly? Some of the wires may be obscured because they run into the frame of the trailer.